MASAKO Y KATAOKA1, Shotaro Kanao1, Mami Iima1, Natsuko Onishi1, Makiko Kawai1, Akane Ohashi1, Rena Sakaguchi1, Masakazu Toi2, and Kaori Togashi1
1Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, 2Breast Surgery, Kyoto University, Kyoto, Japan
Eighteen breast lesions underwent
high resolution (HR) diffusion-weighted MRI (DWI) with a resolution of 1.1 x
1.1 x 1.4 mm and b value of 0 and 850 sec/mm2 using
readout-segmented echo-planar imaging (rs-EPI). Computed (c) DWI with b value
of 1200 sec/mm2 were calculated. Lesion conspicuity and maximum size
on these images were compared to those on HR DCE MRI. Masses showed relatively good
lesion conspicuity on rs-EPI, slightly deteriorated on cDWI. Size was similar
between rs-EPI and HR-DCE, while slightly smaller for cDWI. In contrast, NME is
often poorly visualized on rs-EPI and cDWI, resulting in underestimation of
NME.
